Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.2 on date 28-12-2022 and time 17:16:41 (UTC) in region 3 km NE Leonessa (RI)

A magnitude ML 1.2 earthquake occured in region: 3 km NE Leonessa (RI), on

  • 28-12-2022 17:16:41 (UTC)
  • 28-12-2022 18:16:41 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.5870, 12.9880 at 12 km depth.

The earthquake was located by: Bollettino Sismico Italiano INGV.

Search earthquakes: Any within 30 km radius

The values of hypocentral coordinates and magnitude may be revised at a later time as more information becomes available.

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Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Leonessa RI 3 2435 2435
Monteleone di Spoleto PG 8 599 3034
Posta RI 11 694 3728
Polino TR 12 233 3961
Poggio Bustone RI 12 2055 6016
Rivodutri RI 13 1253 7269
Morro Reatino RI 14 373 7642
Borbona RI 15 617 8259
Poggiodomo PG 15 117 8376
Cittareale RI 15 482 8858
Cantalice RI 15 2755 11613
Cascia PG 15 3217 14830
Micigliano RI 16 127 14957
Ferentillo TR 17 1913 16870
Labro RI 17 374 17244
Arrone TR 18 2763 20007
Montefranco TR 18 1276 21283
Scheggino PG 19 461 21744
Colli sul Velino RI 20 533 22277

Municipalities with at least 50000 inhabitants

An earthquake occurred to
28 Km E of Terni (111501 inhabitants)
43 Km NW of L'Aquila (69753 inhabitants)
47 Km SE of Foligno (57155 inhabitants)
59 Km W of Teramo (54892 inhabitants)
69 Km NE of Guidonia Montecelio (88673 inhabitants)
71 Km N of Tivoli (56533 inhabitants)
75 Km E of Viterbo (67173 inhabitants)
76 Km SE of Perugia (166134 inhabitants)
88 Km NE of Roma (2864731 inhabitants)
96 Km W of Montesilvano (53738 inhabitants)
Recent and historical seismicity
Seismic hazard
Shakemap
Felt maps
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Bulletin
Rev1000 		ML 1.2 2022-12-28
17:16:41		 42.5867 12.9878 12 2024-03-01
15:28:27		 Bollettino Sismico Italiano INGV 118554871
Reviewed
Rev100 		ML 1.2 2022-12-28
17:16:41		 42.5987 13.0002 13 2022-12-28
18:32:17		 Sala Sismica INGV-Roma 113147631
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2022-12-28 17:16:41 ± 0.06
Latitude 42.5867 ± 0.0036
Longitude 12.9878 ± 0.0049
Depth (km) 12 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 118554871

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 396
Semi-minor axis of confidence ellipse (meter) 179
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 49
Circular confidence region, given by single value of horizontal uncertainty (meter) 400.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 104
Number of associated phases, regardless of their use for origin computation 30
Number of defining phases 29
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.19
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.52970
Number of stations at which the event was observed 17
Number of stations from which data was used for origin computation 16
Magnitudes information

ML:1.2

Field Value
Value 1.2
Uncertainty 0.3
Num. used stations 18
Type of magnitude ML
Reference to an origin 113147631
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2022-12-28 18:32:17

ML:1.2

Field Value
Value 1.2
Uncertainty 0.3
Num. used stations 18
Type of magnitude ML
Reference to an origin 118554871
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2023-06-19 10:19:14
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.VVLD.HHZ. 2022-12-28T17:17:05.90 3.0 undecidable manual Sn -1.37 0
IV.FDMO.HHZ. 2022-12-28T17:16:57.46 0.3 undecidable manual S 9 50.5161 92 0.28 67
7F.SIB2.EHN. 2022-12-28T17:16:55.19 0.3 undecidable manual S 37 42.4242 93 0.17 69
IV.MMO1.EHZ. 2022-12-28T17:16:55.82 0.6 undecidable manual S 38 44.3223 92 0.3 45
IV.MOMA.HNE. 2022-12-28T17:16:55.00 0.3 undecidable manual S 305 41.7249 93 0.17 70
7F.SIB1.EHZ. 2022-12-28T17:16:55.20 0.6 undecidable manual S 34 41.1255 93 0.52 42
7F.SIB3.EHN. 2022-12-28T17:16:54.01 0.3 undecidable manual S 36 39.4272 93 -0.19 71
IV.FIAM.HHZ. 2022-12-28T17:16:53.57 0.6 undecidable manual S 163 36.9297 93 0.03 49
IV.SMA1.EHZ. 2022-12-28T17:16:51.53 0.6 undecidable manual S 80 28.749 95 0.16 48
IV.CSP1.EHZ. 2022-12-28T17:16:51.78 0.3 undecidable manual P 17 58.7967 92 0.08 69
IV.NRCA.HHZ. 2022-12-28T17:16:51.28 0.6 undecidable manual S 21 29.2485 95 -0.22 48
IV.MML1.EHZ. 2022-12-28T17:16:51.32 0.3 undecidable manual P 359 58.497 92 -0.33 67
IV.FDMO.HHZ. 2022-12-28T17:16:50.31 0.3 undecidable manual P 9 50.5161 92 -0.13 70
IV.MOMA.HNE. 2022-12-28T17:16:49.47 0.3 undecidable manual P 305 41.7249 93 0.39 67
IV.CESI.HHZ. 2022-12-28T17:16:49.75 0.3 undecidable manual P 352 46.9197 92 -0.12 71
IV.RM33.EHZ. 2022-12-28T17:16:49.12 0.6 undecidable manual S 115 20.4684 100 -0.04 50
7F.SIB2.EHN. 2022-12-28T17:16:49.00 0.3 undecidable manual P 37 42.4242 93 -0.19 71
IV.MMO1.EHZ. 2022-12-28T17:16:49.23 0.3 undecidable manual P 38 44.3223 92 -0.25 70
IV.FIAM.HHZ. 2022-12-28T17:16:48.30 0.3 undecidable manual P 163 36.9297 93 -0.03 72
IV.ARRO.EHZ. 2022-12-28T17:16:48.53 0.6 undecidable manual S 267 18.1707 103 -0.04 50
7F.SIB1.EHZ. 2022-12-28T17:16:48.74 0.1 undecidable manual P 34 41.1255 93 -0.25 93
7F.SIB3.EHN. 2022-12-28T17:16:48.34 0.3 undecidable manual P 36 39.4272 93 -0.38 68
IV.SMA1.EHZ. 2022-12-28T17:16:47.35 0.3 undecidable manual P 80 28.749 95 0.27 70
IV.GAVE.EHZ. 2022-12-28T17:16:47.20 0.6 undecidable manual S 327 13.9749 114 -0.31 48
IV.NRCA.HHZ. 2022-12-28T17:16:46.89 0.1 undecidable manual P 21 29.2485 95 -0.27 95
IV.ARRO.EHZ. 2022-12-28T17:16:45.57 0.1 undecidable manual P 267 18.1707 103 0.1 100
IV.LNSS.HHZ. 2022-12-28T17:16:45.70 0.6 undecidable manual S 67 4.5954 154 0 51
IV.RM33.EHZ. 2022-12-28T17:16:45.90 0.1 undecidable manual P 115 20.4684 100 0.09 99
IV.LNSS.HHZ. 2022-12-28T17:16:44.01 0.1 negative manual P 67 4.5954 154 0.21 100
IV.GAVE.EHZ. 2022-12-28T17:16:44.87 0.6 undecidable manual P 327 13.9749 114 0.02 51
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.LNSS.HHE. ML:1.9 0.0011949999999999999 0.12 AML other m 2022-12-28T17:16:45.86
IV.LNSS.HNE. ML:1.9 0.0010474999999999998 0.1 AML other m 2022-12-28T17:16:45.87
IV.LNSS.HHN. ML:1.8 0.0008554999999999999 0.12 AML other m 2022-12-28T17:16:45.96
IV.LNSS.HNN. ML:1.7 0.0007920000000000001 0.12 AML other m 2022-12-28T17:16:45.97
IV.GAVE.EHN. ML:1.4 0.0002035 0.26 AML other m 2022-12-28T17:16:47.54
IV.GAVE.EHE. ML:1.4 0.000209 0.22 AML other m 2022-12-28T17:16:47.81
IV.ARRO.EHE. ML:1.0 0.00006850000000000001 0.2 AML other m 2022-12-28T17:16:48.72
IV.ARRO.EHN. ML:1.0 0.00007994999999999999 1.52 AML other m 2022-12-28T17:16:49.20
IV.RM33.EHN. ML:0.8 0.0000376 0.64 AML other m 2022-12-28T17:16:49.30
IV.RM33.EHE. ML:0.8 0.00004225 1.88 AML other m 2022-12-28T17:16:50.00
IV.SMA1.EHN. ML:1.1 0.00006665000000000001 0.26 AML other m 2022-12-28T17:16:51.86
IV.NRCA.HHE. ML:1.2 0.000081 0.18 AML other m 2022-12-28T17:16:52.24
IV.SMA1.EHE. ML:1.2 0.0000727 0.44 AML other m 2022-12-28T17:16:52.28
IV.NRCA.HHN. ML:1.1 0.0000593 0.1 AML other m 2022-12-28T17:16:53.63
IV.CESI.HHE. ML:1.0 0.00002395 0.42 AML other m 2022-12-28T17:16:57.43
IV.CESI.HHN. ML:1.1 0.0000339 0.7 AML other m 2022-12-28T17:16:57.47
IV.FDMO.HHN. ML:1.0 0.00002305 0.84 AML other m 2022-12-28T17:16:57.41
IV.FDMO.HHE. ML:1.1 0.000036049999999999995 0.22 AML other m 2022-12-28T17:16:58.25
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download